massey 1230 Turf Tires Unable to be found!

[falgra]

I have called every place around town and can't seem to find anyone with the ability to acquire 315/80D16 turf tire for the rear of my Massey 1230. Is there an equivalent size that I should be requesting instead?

 

[Venturabass]

Not sure how savvy you are with internet shopping, but have you tried searching this online? I have a 1240 with ag tires. Never replaced them but recently looked up the sizes online and found them available. Not sure if your size is rare or not.